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APPLICATION FILED AUG.6. 1917- 1,299,161. I I Patented Apr. 1,1919.

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ANTOINE IPADOUE FILIPPI, O PARIS, FRANCE.

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Specification of Letters Patent.

. Patented Apr. 1, 1919.

Application filed August 6, 1917. Serial No. 184,778.

To all whom it may concern:

Be it known that I, ANTOINE PADOUE F1- LIPPI, a citizen of the French Republic, residing at 132 Avenue du Maine, Paris, France, have invented certain new and useful Improvements in Ships, of which the following is a specification.

The present invention relates to ships including boats, submarine vessels or the like and has for its object to provide means for reducing the resistance presented by water to the progress of the vessel and in certain cases to utilize such means for purposes of propulsion by disturbing the equilibrium of the various pressures to which the vessel is subjected.

The invention comprises a revolvin body with double walls which is placed in the vfore part of the hull and partly covers the front end of this hull which is made in corresponding form. The revolving body placed in the fore part of hull is rotated by one of the means described hereinafter. Its outer wall is formed with a number of suitably situated openings. The water which enters between the two walls of the revolving body (whether in consequence of the ships movement or through pressure by means of a pump) escapes through the openings in the outer wall. This escape is effected at great speed. The effect of this escape of water combined with that of the centrifugal force resulting from the rapid rotation of the revolving body is that the resistance to the progress of the ship at the fore is considerably diminished.

If the invention is applied to an already built ship, a special auxiliary engine for actuating the revolving resistance reducing body may be added, or a portion of the motive power produced by the ships engines may be diverted for the purpose of actuating the said body. In this case, notwithstanding the reduction of the power devoted to the working of the propellers, a beneficial result is obtained, that is to say an increase in the ships speed in consequence of the considerable reduction of resistance to the ships progress.

The invention also relates to an additional arrangement intended to complete the effect of the means mentioned above, by reducing the friction between the hull of the This result may be effected in different ways. In the following, two methods of effecting the result are described by way of example.

In the accompanying drawings an example is shown in a purely diagrammatic form of two methods of carrying out the invention. It is obvious that in the carrying out of the invention there may be numerous variations. In these drawings the ships screw which is arranged in the known manner is not shown.

Figure 1 is a diagrammatic sectional view of the apparatus showing the same applied to a submarine vessel.

Fig. 2 is a similar View showing a modified form of the arrangement.

Figs. 3 and 4 illustrate in a purely diagrammatic form and side elevation, partly in section, two hulls furnished with devices for effecting the emulsion of the air hub.

bles in the water and the distribution of this emulsion around the hull, while the ship is in motion.

In order to carry out the first part of the invention, whatever may be the method of made in a form similar to that shown in Figs. 1 and 2, which form must necessarily be that of a solid of revolution around which the movable device 2 to which the invention relates turns.

This movable device has the general form shown in Figs. 1 and 2. It has a double wall.

I11 the method of construction shown in Fig. 1 the movable device 2 is open in front and presents at this point a sort of gill 3 through which the water enters. The outer wall of the device is drilled with a plurality.

of suitably situated openings 4. Tubular devices forming; aautages er nozzles may be doing so, the fore part 1 of the ships hull is fixed in the openings l, in order if it be necessary that $116 flow of-thc water may be better guided while the ship is 111 motion.

The device 2 is carried by a shaft which is -tion of the arrows f. Atthe same time, as

has been stated, the device 2 is rotated rapidly around the shaft 5. In consequence of the flowing away of the water in the direction of the arrows f and of the effect producedby the centrifugal force on the surface of"the;rotary device 2, the water in which the ship is immersed is driven forcibly in the direction of the arrows. The result, as has been stated is a considerable diminution of the resistance to progress, in consequence of the thin liquid streams being assisted in flowing away by being pressed from behind and drawn along in front.

Fig. 2 shows another method of carrying out the invention. The revolving body 7 in this case, is closed in front. Its inner wall is extended at the'back by a cylindrical part ,7 which fits into a seating I of the same form provided in theshipshull 1. As in the first" method of construction, openings 8 are formed-in theouter wall of the device 7 At its back end, the cylindrical part 7 carriesthe rotor 9 of a hydraulic turbine. The injection device 10 of the turbine is fixedto the seating I, that is to say to the .shipfs hul'l. A pump'll on the shaft 12 of which the auxiliary motor is mounted conveys Waterunder pressure into the hydraulic turbine -9'l0through the pipes 1314. In this way the tube 7 that is firmly connected witlrthe rotor 9 is rotated and consequently the device 7. ()n the other hand the water having acted in the turbine flows away through thecylinder 7 into the body 7 and passes out through the openings 8. The total area of these openings is determined so as to oifer the minimum of resistance to the'passage ofthe water.

In thismethod of carrying out the inventi0n,. the rapid fiowingof the water through the openings 8 combined with the effect of the centrifugal force determines the deviation of the thinstreams of liquid in the direction of the arrows and,'coi1sequently the desired diminution of resistance to progression.

The rotationof themovable device may 'likewisebe e'fiected, without recourseto a motor, by'mountingj suitably situated vanes or w-ings o'n the outer wall-of the said device. In this case the ,movable device would be mounted to'run'idly'onits shaft and the rotation would' be efl'ected by the movement of the ship itself;

The effect of these arrangements may be completed as has been stated, by the means shown by way of example in Figs. 3 and I viz: in two methods of carrying out the invention in combination with the system which has just been described.

In the method of carrying out the invention shown in Fig. 3 an air-shaft is arranged in the fore part of the ship and connected through a pipe 15 with a junction placed for example in the axis of the gill 3 of the movable device 2. During themovement of the ship in the .ClllGCtlO-ll of the arr-0w F, the air entering the shaft is carried along into the gill and mixes in the movable device 2 with the water which this device sets in motion as a consequence of its rotation. Thus in some sense an emulsion of air is effected in the liquid mass and when the water issues in the direction of the arrows f through the openings l in the revolving body 2, it carries with it the air bubbles which driven by centrifugal force and carried along by the water pass out through the openings fl at great speed, bubbling around the ships hull and thus surrounding this hull over a length which depends on various conditions. The air stratum which isthus' interposed between the hull and the surroiuiding medium causes a considerable diminution of the resistance to progression by obviating, or at least reducing the friction between the hull and the water at this point.

I11 the method of construction shown in Fig. 4% the air-shaft communicates through a pipe 16 with a junction placed in the axis of the pipe 13 which connects the pump 11 with the hydraulic turbine 910. In this way a sort of aspirating water jet or ejector action produced, the stream of water forced by the pump 11 causing a suction of air through the pipe 16. The airthus drawn in mixes with the water in the pipes 13 and 14 and in the turbine 910. In this; way the air and water emulsion is reliably ef- 1 feeted. This emulsion is then expelled in the direction of the arrows f through the openings 8 in the movable body 7 The reair could be employed for effecting the emulsion with the water, these gases being pro- 7 .duced in the interior of the vessel as required, by means of chemical reaction for example.

It is fully understood that the drawings illustrate the arragements to which the invention relates in a. purely diagrammatic manner. The means of fixing air-shafts to 1 the hull particularly in the case. of Fig. 1

have not been shown. These fixing means which may be of any kind do not form part of the invention.

What I claim and desire to secure by Letters Patent is 1. In a ship or vessel as described means for diminishing the water resistanceon the hull comprising a revoluble member with double walls including an outer Wall with jet apertures and an inner wall spaced therefrom the whole being adapted to fit over the forward end of the hull, a hull shaped to fit in the revoluble member, a shaft adapted to carry the revoluble member, means for revolving'said member and a water inlet in said member.

2. In a ship or vessel as described means for diminishing the Water resistance on the hull comprising a revoluble member with double walls including an outer Wall with jet apertures and an inner wall spaced therefrom the whole being adapted to fit over the forward end of the hull, a hull shaped to fit in the revoluble member ashaft adapted to carry the revoluble member, a hydraulic turbine with rotor adapted to drive said revoluble member, and means for pumping water under pressure into the said turbine and through the revoluble member substantially as described.

3. In a ship or vessel as described means for diminishing the water resistance on the hull comprising a revoluble member with double Walls including an outer Wall with jet apertures and an inner wall spaced therefrom the whole being adapted to fit over the forward end of the hull, a hull shaped to fit in the revoluble member, a shaft adapted to carry the revoluble member, means for revolving said member, a water inlet in said member and means for forcing air or gas into the water passing through the revoluble member for the purpose described.

In testimony whereof I have affixed my signature in presence of a Witness.

Witness o CHAs. P. PRESSLY.

(loples'oi this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

